ExoClock

The Star
Simbad GAIA 2MASS	WASP-104 DR2 3868603216762016256 J10422458+0726060
RA	10:42:24.6020		DEC	+07:26:06.294
Parallax 5.35 mas		P.M. RA -32.17 mas/y		P.M. DEC -1.165 mas/y
Mag_V 11.12	Mag_R 11.3	Mag_I^* 10.238	Mag_J 10.36	Mag_H 9.979	Mag_K 9.882
Mag_G 11.593		Mag_{G_BP} 12.036		Mag_{G_RP} 11.018
^* calculated from GAIA magnitudes

Ephemeris - Verified
Kokori et al. 2020
Mid-time 2457928.048611 ± 1.7e-05 BJD_TDB
Period 1.7554057 ± 3e-07 days
Transit Parameters
Smith et al. 2014
R_p/R_s 0.1214 ± 0.0008	a/R_s 6.52 +0.13 -0.13		i 83.63 +0.25 -0.25 deg
R_p/R_s 0.1214 ± 0.0008	e -		ω - deg
Depth_R^* 16.44 mmag		Duration^* 1.78 hours
^* calculated from the other parameters, using PyLightcurve
Limb Darkening Parameters
Smith et al. 2014
T_eff 5475.0 +127.0 -127.0 K	Log(g) 4.5 +0.02 -0.02 cm/s²		Fe/H 0.32 +0.09 -0.09 dex

ExoClock Status
Observing Priority Total Observations (Recent) O-C minutes Total Literature Mid-times		LOW 24 (6) 0.6±0.24 2

ExoClock Observations

Observation Date	Observer Observatory	Telescope Camera / Filter / Exp [s]	O-C minutes
2021-05-04	Enrique Arce Vallbona Observatory	Ritchey Chretien Moravian G2-8300 / Lum / 30.0	1.0 ± 1.3
2021-04-13	Claudio Lopresti Claudio Lopresti	Mak-Newton CCD Sbig ST10xme / I / 180.0	-1.5 ± 2.7
2021-03-20	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / R / 120.0	1.2 ± 1.3
2021-02-28	Didier Laloum Observatoire Privé du Mont (OPM)	RC 8 GSO Atik 383L+ / Astrodon ExoPlanet-BB / 120.0	-0.7 ± 1.7
2021-02-28	Ivo Peretto MarSEC Marana Space Explorer Center	R-C Moravia G2-1600 MkII / Clear / 60.0	-2.1 ± 0.9
2021-02-14	Massimiliano Mannucci Osservatorio Astronomico Margherita Hack	Celestron C14 SBIG ST10 XME / Clear / 60.0	0.4 ± 1.2
2020-11-19	Adam Popowicz Observatory Pyskowice	RC12" GSO ASI ZWO 1600 MM / ATIK 11000M / R / 90.0	-1.5 ± 2.7
2020-04-11	John Savage Z42 Rushay Farm Observatory	Celeston 14Edge with focal reducer ATIK One 9.0 / R / 120.0	3.0 ± 1.0	- Data available
2020-04-11	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / R / 90.0	1.2 ± 1.7	- Data available
2020-04-11	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	0.5 ± 1.0	- Data available
2020-04-11	Mauro Calo’ Cavallino	RC SBIG ST10 / Lum / 60.0	-0.8 ± 1.2	- Data available
2020-04-11	Alberto Tomatis Alto-Observatory	RC STL 6303 / Lum / 100.0	-1.5 ± 2.6	- Data available
2020-03-14	Anaël Wünsche Observatoire des Baronnies Provençales	Celestron ZWO ASI071 MC Pro / Clear / 60.0	5.0 ± 1.3	- Data available
2020-03-14	Mario Morales Aimar Observatorio de Sencelles MPC K14	10" Meade Schmidt Cassegrain SBIG ST7-XME / V / 240.0	3.1 ± 1.7
2020-03-14	Danilo Sedita Osservatorio Sedita Castrofilippo	RC GSO Moravian G2-1600 / R / 60.0	0.4 ± 1.2	- Data available
2020-02-27	Richard Lee RichardLee	Planewave CDK14 QSI683-WSG8 / V / 60.0	3.5 ± 1.7	- Data available
2020-02-15	Vikrant Kumar Agnihotri Cepheid Observatory India	C11-A XLT Schmidt-Cassegrain/F5.12 Atik414ex mono / Astrodon ExoPlanet-BB / 15.0	1.8 ± 0.9	- Data available
2020-02-06	Mark Phillips Forthimage	Orion Optics Newtonian Atik 460EX / R / 50.0	0.8 ± 2.9	- Data available
2020-02-06	Mauro Calo’ Cavallino	GSO RC SBIG ST10 / R / 120.0	-5.4 ± 2.2	- Data available
2019-03-27	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 120.0	0.0 ± 0.6	- Data available
2019-03-20	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 120.0	-0.1 ± 0.7	- Data available
2017-02-25	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	3.7 ± 1.0	- Data available
2016-03-25	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	-1.8 ± 1.4	- Data available
2015-02-10	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 30.0	-1.2 ± 1.6

Literature Mid-times

Observation Date	Mid-time	Time format	Reference	O-C minutes
2017-06-30	2457935.0702321 ± 8.6e-06	BJD_TDB	Močnik et al. 2018	-0.0 ± 0.0
2013-04-23	2456406.11126 ± 0.00012	HJD_UTC	Smith et al. 2014	0.2 ± 0.2

Discovered by: Smith et al. 2014